According to foreign medical experts, swallowing saliva has many health functions. But will swallowing water affect your health when you have a cold, pneumonia or chronic fatigue syndrome?
No, people secrete about 1- 1.5 liters of saliva every day, so a large amount of saliva constantly flows in the mouth, which has the functions of washing and lubricating, and can remove food residues and bacteria in the mouth, which is of great significance for preventing infection and dental caries. Mucin in saliva can lubricate mucosa and make lips and cheeks move freely. Saliva also contains lysozyme, which can kill some bacteria. Saliva contains mutase and salivary gland corpuscles. It can play an antibacterial role. Saliva also contains secretory immunoglobulin A(S-lgA), which makes it difficult for bacteria to adhere to the tooth surface, so it has an immune effect on dental caries.